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 TM 55-1925-204-12
Table 3-1. Operator/Crew Preventive Maintenance Checks and Services - Continued
Tug Diesel Large Design 3006
B - Before
A - After
M - Monthly
D - During
B/A - Biannually
Q - Quarterly
Intervals
Item
Item To Be
Procedure
Equipment Will Be Reported
No.
BDA
M Q B/A
Inspected
Not ready/Available If:
46
Stern tube shaft
Check shaft packing gland during
Vessel is flooding through
packing gland
operation for excessive leak off
shaft packing gland.
and heat. Leakage should be-10-
15 drops per minute to lubricate
shaft bearing and packing.
Should it become necessary to
tighten gland, ensure bolts torque
is staggered to afford even move-
ment on packing gland. Use lock
nuts to stop torque nuts from
vibrating loose.
47
Fuel system
Check quantity of fuel in tanks,
Transfer pump is inoperative.
noting any indication of leaks.
Excess water is evidenced
Add fuel to top-off as necessary.
in fuel system.
Tank capacities:
Fuel oil tanks (7) 21
214 gals
Day tank
300 gals
Galley range tank
30 gals
Lubricating oil
450 gals
Dirty lube oil
395 gals
Sludge tank
50 gals
Check service tanks with sound-
ing tape. Inspect fuel oil transfer
pump for leaks and proper opera-
tion (15 GPM at 25 psi). Ensure
relief valve lifts when pump
discharge valve is closed. Check
tank vents co insure flame ar-
restor is installed, and free of rust
and corrosion. Ensure ball check
valve operates correctly - ball free.
Warning
Day tank overflows into number
48
four service tank port side. En-
sure inner bottom fuel oil storage
tank (4 port) is at a level to accept
overflow. Keep tank at 70%
capacity or below, to prevent oil
spillage from day tank overflow.
49
Fire and salvage
Ensure pump, line and strainers
Fire and salvage pumps
pump
are in good repair and properly
are inoperable in fire and
mounted. Check piping for leaks,
salvage situation.
and ensure suction and discharge
valves are in good repair and
operational. Ensure pump is lined
up prior to starting. Open suction
3-8.10
Change 1
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